Krishna Nair
Harlow,United Kingdom
Summary
Embedded Firmware Specialist with a proven track record in developing robust, efficient software solutions for complex systems. Skilled in C programming, real-time operating systems, hardware interfacing, and project management, with 12+ years of experience delivering high-quality firmware that enhances performance, reliability, and user experience. Adept at coding, testing, and optimizing designs to exceed expectations while continuously seeking opportunities for innovation and skill enhancement.
Overview
14
14
years of professional experience
6
6
years of post-secondary education
1
1
Certification
Work History
Senior Manager
Schneider Electric India Pvt Ltd
Navi Mumbai, India
04.2023 - 05.2024
- Implemented and integrated SBSFU (Secure Boot Secure Firmware Update), advanced bootloader for cybersecurity, into projects using STM32H and STM32L series microcontrollers, enhancing system security by 30% and reducing firmware update failures by 20%.
- Developed and tested Solid-State Circuit Breaker with SiC technology, contributing to research paper publication. Designed and implemented firmware for STM32L4 microcontrollers, enabling advanced operational modes which improved system performance by 20% and reduced development time by 15%.
- Designed and implemented FreeRTOS based firmware for Electric Vehicle Supply Equipment (EVSE) with 22kW capacity using Type 2 connectors, leveraging STM32 and ESP32 microcontrollers to achieve 15% improvement in reliability and cost efficiency.
Technical lead
L&T Technology Services
Navi Mumbai, India
07.2022 - 04.2023
- Developed drivers, test and application code for HIB in Fuel Dispensers using NXP-LPC55S MCU, optimizing communication protocols to reduce latency by 25% and improve data transfer efficiency by 20%.
- Debugged and optimized firmware using tools such as logic analysers, DSO, and protocol analysers, reducing troubleshooting time by 30%. Developed algorithms through rapid prototyping to detect and report tampering on fuel dispensers.
- Implemented Secure Bootloader in NXP MCU for various control cards in fuel dispensers, enhancing security by 40% and reducing unauthorized firmware access. This implementation improved production efficiency by 25%, ensuring seamless integration and faster deployment across manufacturing lines.
Senior Embedded Firmware Engineer
Magenta EV Solutions Pvt Ltd
Navi Mumbai, India
09.2020 - 07.2022
- Architected and developed firmware for Type 2 Socket EVSE chargers (3.3kW to 22kW) using FreeRTOS on ESP32 MCU, ensuring compliance with international EV charging protocols IEC 61851, CP-PP and integrated Intelligent HMI displays, improving system reliability by 15% and reducing user interface errors by 20%.
- Designed and developed India’s first 12- IEC socket EVSE (3.3kW x12) for warehouses, enabling large-scale EV charging hubs and increasing charging capacity by 40%, improving operational efficiency and reducing downtime for fleet management.
- Led firmware team in integrating OCPP 1.6J protocol for online transaction management with IoT and FOTA for remote system updates, enhancing charger upgrades and user experience. Conducted hardware validation using DSO, DMM and logic analysers, collaborating with software, hardware, and production teams to refine charger designs, reducing system downtime by 20% and manufacturing costs by 25%.
Senior Firmware Engineer
COROB India Pvt Ltd
Mumbai, India
06.2017 - 08.2020
- Developed and optimized firmware for 5th Generation Colorant Dispenser Machines with stepper motors, achieving dispensing accuracy of 0.03 ml and flow rate of 400 ml/min, surpassing industry standards for precision and efficiency.
- Engineered firmware for Paint Shaker Machines and Gyroscopic mixers using PIC18F MCU, integrating DC motor control for clamping and AC motor for homogeneous mixing.
- Developed Modbus RTU communication for Shaker and Gyroscopic Mixers, along with UI Control & Report Generation Software using VB.NET.
- Managed end-to-end firmware development, including code design, bug resolution, hardware-mechanical integration and unit testing, achieving 10% reduction in system error rates.
T2 Engineer R&D
Hind Rectifiers Ltd
Mumbai, India
01.2015 - 06.2017
- Developed firmware for high-power 32.5kVA Under-Slung Inverter System for Indian Railways, ensuring reliable performance in demanding applications. Designed control algorithms for boost converters and 3-phase inverters using Atmel MCU, incorporating real-time feedback with ADC and PI control, improving efficiency and system stability by 15%.
- Led design of Real-Time Data Acquisition Systems for SMPS RTU Display Units, utilizing PIC32MX795F812L as master for multi-slave Modbus RTU communication, enhancing system monitoring accuracy by 20%.
- Developed and Optimized various Device Drivers across multiple projects, meeting 100% of deadlines with precision and efficiency.
Embedded System Design Engineer
Escon Elevators Pvt Ltd
Navi Mumbai, India
06.2011 - 12.2014
- Developed critical control logic firmware for Elevator Controller Motherboard with multi-layer safety features and integrated diagnostics via CAN bus communication.
- Developed firmware for supporting elevator control systems like Door Drive Systems, Load Sensors, various Display Cards, ARD and communication interfaces using PIC18F microcontrollers.
- Designed and tested firmware for Automated Three Level Pit Type Car Parking Systems, incorporating infrared sensors and hydraulic controls in field.
- Conducted field testing and debugging, reducing firmware faults by 20%.
Gap Months
Relocation and Skill Development
Harlow, UK
08.2024 - 02.2025
- Pursuing certifications in Advanced Embedded Systems, C++, and VHDL for FPGA Development.
- Undertaking personal projects and freelance consultancy to deepen technical expertise.
- Strengthened adaptability, communication, and problem-solving skills during relocation and skill upgrade.
Education
Bachelor of Engineering - Electronics & Telecommunication
Mumbai University
Mumbai India 08.2008 - 09.2011
Diploma in Engineering - Electronics & Communication
Maharashtra State Board of Technical Education
Mumbai India 04.2005 - 07.2008
Skills
- Embedded C Firmware Development
- FreeRTOS Development
- Secure Bootloader (SBSFU)
- Internet Of Things (IoT)
- Algorithm Implementation
- State Machine & Flowchart
- Debugging Testing & Troubleshooting
- Digital Electronics
- PDLC & SDLC
- Agile Project Management
- Git & Version Control
- Leadership Skills
- Problem Solving & Critical Thinking
- Mentorship
- Team Player
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Certification
- VHDL for (Intel/Altera) FPGA Development
- Advanced Embedded Systems Object-Oriented Programming in C
Visa & Immigration Status
- Skilled Worker Dependant Visa (eligible to work in the UK without restrictions)
- Valid Until 26 July 2026
- Share code available
SOFTWARE TOOLS
• STM32 Cube IDE
• System Workbench for STM32
• STM32 CUBE MX
• MPLABX IDE
• Kiel uVision 4 & 5
• MCUXpresso IDE
• Visual Studio
• Visual Studio Code
• Platform IO
• Arduino
• Docklight
• Modscan Master & Slave
• Base Block COM Test Pro
• WinMerge
• GerbV
• Proteus 8
• Orcad
PERIPHERALS & INTERFACES
- ARM, RISC, Xtensa, SoC
- Displays LCD, TFT, HMI & OLED
- Dot Matrix & E-Paper Displays
- Stepper Motor & DC Motors
- Electromechanical Impulse Relays
- Positonal/Rotary Encoders
- Load Sensors
- Voltage & Current Sensors
- Accelerometer & Gyroscope Sensors
- Temperature Sensors
- RFID Readers
- Ultrasonic Sensors
- Real Time Clock
- EEPROM & NAND Flash Devices
- NeoPixels - WS2812B
- UART, RS232, RS485
- I2C, SPI, CAN
- Classic Bluetooth, BLE
HARDWARE TOOLS
- Digital Storage Oscilloscope
- Function Generator
- Digital Multimeter
- LCR & Tacho Meter
- Logic Analyser
- CAN Analyser-PCAN
- JTAG & Debuggers for various MCUs
- Programmable Power Supply
- Programmable AC-DC Load
Languages
English
Fluent
Malayalam
Native
Hindi
Native
Marathi
Advanced
Timeline
Gap Months
Relocation and Skill Development
08.2024 - 02.2025
Senior Manager
Schneider Electric India Pvt Ltd
04.2023 - 05.2024
Technical lead
L&T Technology Services
07.2022 - 04.2023
Senior Embedded Firmware Engineer
Magenta EV Solutions Pvt Ltd
09.2020 - 07.2022
Senior Firmware Engineer
COROB India Pvt Ltd
06.2017 - 08.2020
T2 Engineer R&D
Hind Rectifiers Ltd
01.2015 - 06.2017
Embedded System Design Engineer
Escon Elevators Pvt Ltd
06.2011 - 12.2014
Bachelor of Engineering - Electronics & Telecommunication
Mumbai University
08.2008 - 09.2011
Diploma in Engineering - Electronics & Communication
Maharashtra State Board of Technical Education
04.2005 - 07.2008
- VHDL for (Intel/Altera) FPGA Development
- Advanced Embedded Systems Object-Oriented Programming in C
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